Three-dimensional Reflector Imaging of in-mine High Frequency Crosshole Seismic Data

Cvetan Sinadinovski; Stewart. A. Greenhalgh; Iain Mason

doi:10.1071/EG995325

ISSN: 0812-3985
E-ISSN: 1834-7533

Three-dimensional Reflector Imaging of in-mine High Frequency Crosshole Seismic Data
Authors Cvetan Sinadinovski^a, Stewart. A. Greenhalgh^b and Iain Mason^c
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^a Australian Seismological Centre AGSO, GPO Box 378 Canberra, ACT ^b School of Earth SciencesFlinders University of South Australia, GPO Box 2100 Adelaide, SA, 5001, Fax: (08) 201 2676 ^c Department of Engineering ScienceUniversity of Oxford, Parks Road Oxford, OX13PJ, , UK
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 26, Issue 2-3, Jun 1995, p. 325 - 330
DOI: https://doi.org/10.1071/EG995325
- Published online: 01 Jun 1995

Abstract

A combined crosswell and VSP seismic reflection experiment was carried out in a metalliferous mine in an attempt to image in three-dimensions the stope tunnels and residual ore. The experiment provided initial field testing of a newly designed hardware - software system for high resolution in-mine seismic work.

High frequency (1-3 kHz) seismic signals were recorded on both hydrophones and triaxial geophones from detonator explosions. The major form of noise contamination was tube-waves. The data were migrated in 3-D by forming a partially coherent sum of the cross-products (semblance) between the components of the particle motion vector and the components of the wave vector, over all receivers and all sources, for every grid point in the investigated volume. Migration maps with the PP mode using the crosshole data were the most successful. The images correlated remarkably well with the known geology and mineworkings.

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References

Berkhout, A.J. 1985, Seismic Migration: Imaging of Acoustic Energy by Wave Field Extrapolation: Elsevier.
Cao, S. 1990, Synthetic Seismograms and Inverse Problems in Reflection Seismology: Ph.D. Thesis, Australian National University.
Cao, S. and Greenhalgh, S.A. 1994, Finite difference solution of the eikonal equation using an efficient, first-arrival wavefront tracking scheme: Geophysics 59, 632-643.
Pant, D.R. and Greenhalgh, S.A. 1989, Lateral resolution in seismic reflection - a physical model study: Geophys. Jour. Int. 97, 187-198.
Sinadinovski, C. 1994, Tomographic and 3-D reflection imaging with application to mine layout and development: Ph.D. Thesis, Flinders University of South Australia.
White, J.E. 1965, Seismic Waves : Radiation, Transmission and Attenuation: McGraw Hill.

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Article Type: Research Article

Keyword(s): Crosshole seismic; in-mine; reflector imaging

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Three-dimensional Reflector Imaging of in-mine High Frequency Crosshole Seismic Data

Abstract

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